Sand swab



May 22, 1923.

J. PENROD ET AL SAND SWAB Filed Aug. 30 1921 3 Sheets-Sheet 2 J. PE-NRO-D ET AL SAND SWAB 5 Sheets-Sheet 3 zzz Patented May ZZ, 1923.

JOHN PENROD AND ROBERT D. THOMPSON, OF OKMULGE, OKLAHOMA.

SAND SWAB.

Application filed August 80, 1921.

To all whom, it may concern.:

Be it known that we, JOHN PnNRoD and ROBERT D. THOMPSON, citizens of the United States, residing at Okmulgee, in the county of Okmulgee, State of Oklahoma, have invented a new and useful Sand Swab, oit which the following is a specification.

This invention aims to provide novel means for swabbing the sand from. a pump plunger and to prevent sand from settling about the plunger, the settling sand being directed into the sand pocket. The invention aims, further, to providela device of the sort mentioned, the arts of which are spring-constrained to t about the plunger closely, to the end that wear may be taken up.

The device forming the subject matter of this application is adapted to be used in connection with a pump of the sort shown in a co-pending application, Serial No. 457 ,736, filed April 1, 1921.

We do not bind ourselves to the specific forms depicted and described, since a mechanic may make changes, within the scope of what is claimed, without departing from the spirit of the invention or avoiding the charge of infringement. y

In the drawings :-Figure 1 shows in longitudinal section, a device constructed in accordance with the invention; Figure 2 is an elevation showing the swab and the plunger; Figure 3 is a cross section on the line 3k3 of Figure 1; Figure 4 is a longitudinal f sectionshowing a modification; Figure 5 is cross section on the line 5-5 of Figure 4; Figure 6 is a longitudinal section showing the application of the invention to the pump mentioned above and vdisclosed in the csi-pending application alluded to.

Referring to Figure 6, thev numeral 1 indicates an outer pump casing having internal threads 86 at the opposite ends thereof, the threads at the lower end of the casingr being designed to accommodate a coupling 87 which connects a screen 88 to the casing. The threads 86 at the upper end oi" the cas. ing 1 hold a coupling 89 carrying the tub ing 90. The coupling 87 is provided with a threaded` opening 91 receiving the lower end of a working barrel 2, the upper end of the working barrel terminating in spaced relation to the coupling 89, so that particles of sand in suspension in the Huid handled by the pump may settle into the sand trap 75 Serial No. 496,853.

existing between the working barrel 2 and the casing 1. Located in the lower end of the working barrel 2 is a standing valve 92, which is of the usual type, the valve opening on the suction stroke, and closing on the down` stroke. The plunger is denoted b-y the numeral 11 and is provided with cups 93, affording a close tit between the plunger and the working barrel. The plunger 11 is provided with a housing 231 for a valve 94, the valve preferablyv being in the form of a ball, the upward niovement of which is restricted by a transverse pin 95 carried by the plunger 11. A cage 96 is mounted on the upper end of the plunger 11 and an operating member 97'is connected thereto. A valve 98 operates in the cage 96. The details above alluded to are `shown in the (zo-pending application above mentioned and are reviewed in this application in order that the utility of the device forming the subject matter of this application maybe manifest. Y

The working barrel 2 has :i circumferential seat 3, a support being mounted in the seat. The support includes a pair of approximately semi-circular members 4 hav ing outstanding ears 5 connected by tightening devices 6, such as bolts. The members 4 Qt the support are supplied with outstanding fingers 7. The fingers 7 and the ears 5 engage the casing 1 and thus the working barrel 2 is steadied and centralized in the casing. l

The device includes a' tubular collar 9 provided with a bore 10 wherein the plunger 11 is mounted for reciprocation, the c'ollar of swab being equipped in its lower end with a seat 12 receiving the upper end of the working barrel 2. The tubular swab 9 has 'a'. flared mouth 14 at its upper end the mouth leading to the bore 10. rOpenings 15 are formed in the upper end of the swab 9 and communicate at their inner ends with the flared mout-h 14, Openings 150 are formed in the swab 9 at. the place where the mouth 14 joins the bore 10, the openings being located partly in the mouth and partly in the bore.' The openings 15 slant downwardly and outwardly and sand which might otherwise collect on the plunger 11 is received in the openings 15 or 150 and is directed downwardly into the sand pocket 75. Since the openings 150 intersect the bore 10, a plurality of sharp edges are tormedand 21, such as bolts, extend.

these edges tend to strip from the plunger 11 any sand which may adhere thereto, and

to direct into the opening 150, any sandy vnuts 22 on the bolt. The springs serve to draw'the members 16 of the swab 9 about the plunger 1v1`r auto-matic compensation for wear being the result. The springs 23 may be adjusted by mea'iis ofthe nuts 22.

TheY members 1601i the: swab 9 are provided` on their longitudinal edges with lugs 25, the lugs onone member alternating with the lugs on thel other member. The lugs 25 'aid in preventing longitudinal shifting movement between the members 15 of the swab. The uppersurfaces of the lugs 25 are downwardly inclined, as shown at 26. IGonsequently, sand is carried downwardly and outwardly 'and .does not tend to work in- `wardly between the lugs 25 into the bore or the swabto the obvious detriment of the swab and the reciprocatingl plunger 11.

Inr the modification shown in Figures 4; and 5, parts hereinbefore described are designated by numerals previously used, with the sufiix an In the modification, the bolts 21 and the springs'23 are replacedv by a single coiled prehensile spring SO'located in a circumscribing groove or seat formed in the'members 16a. Further, the holes 150 and 15 are replaced by openings of a diierent sort, namely, slits27 formed in the upper ends of themembers 16a', they slits being downwardly land outwardly inclined as showin at 27a. The-operation oi the form shown-in Figures l and 5' will beunderstood from what has been stated h'ereinbefore conv cerning the form set forth Figure 1.

Vhat is claimed is 1. In a device of the class'described, a casing, a working barrel within the casing, a plunger operatingwithin the working barrel, asand trap,y mounted on the working barrel and-comprising members mounted for movement toward and away from each other; and spring means for moving said members toward each other.

2.A ln a pumping apparatus, a casing, a.` working barrel withinthefcasing'and'spaced therefrom to providey a' lsai/id trap,.a plunger operating within the working barrel, a sand f 'G5 swab mounted on the' working barrely and comprising members iiioun'ted 'for movement toward and away from each other, said members having interengaged lugs,'the upper surfaces'ol which' are downwardly and outwardly' inclined; and spring Vmeans for moving said members toward each-other.

3. .In a,y pumping'appai'atu's, a casing, a. working barrel within the casing, a plunger,"

operatingwithin the workingibarrel, a sand swab having ai central bore to permit the swabL to be positioned on the working barrel, and plunger, said swab being provided witha flared mouth communicating with the bore, the swab having downi'vardl'y and outwardly inclinedopenings in that end which is provided with the mouth, the swabcomprising members mounted for movement toward and away from each other; and means vor'moving said members vtoward eachg other.

4. ln a device ofthey characterfdescribed;

a casing, a working barrel supportedwithin the casing, a-'plunger operating within the working barrel, a sand*I swab ysupportedby the working barrel andadapt'edy to frictionally engage the plun-ger,*said swab comso y prising cooperating members mounted iorv relative transverse movement with respect rto each other; and means toi' adjusting saidvv members transverselylwith respectftoeach In testimonythat we claim the foregoing as our own, we have hc tures.

JOHN vrinuion.v noniinrn. TnoMrsoN. Witness: v

JAMES D.- Lnwrs.

retoafiixed oi'irmsigna- 

